Aviz Networks outlines SIP and RTP metadata export

Aviz Networks' ASN-DPI exports Session Initiation Protocol (SIP) and Real-time Transport Protocol (RTP) metadata to provide real-time visibility into call setup and media performance, helping enterprise teams diagnose voice-quality and signaling problems without capturing media payloads or installing agents.

Research overview

ASN-DPI extracts protocol-level metadata from SIP signaling and RTP media streams instead of exporting full packet captures. The exported metadata is designed to convey call negotiation and expected media behavior while excluding voice payloads.

Key findings

The vendor brief describes fields and correlations that enable end-to-end mapping of signaling to media, supporting faster identification of whether issues originate in call setup or media delivery. ASN-DPI also computes continuous quality metrics such as packet loss and jitter tied to specific SIP sessions.

Technical breakdown

SIP metadata

For each SIP session, ASN-DPI reports identifiers and negotiation details including Call ID, flow direction, media count and types, transport protocol, offered IP addresses and ports, and the set of supported payload formats and codecs. These fields are intended to help validate codec negotiation and surface misconfigurations involving firewalls, Network Address Translation (NAT), or session border controllers.

RTP metadata

For RTP streams, ASN-DPI exports session correlation Intrusion Detection System (IDS) linking media to calls, sender and receiver stream identifiers, codec names, clock rate and channel count, and sequence and timestamp information. The system derives expected versus actual packet intervals and quality indicators such as packet loss, jitter in milliseconds, out-of-order delivery, and duplicate packets.

Operational impact

Correlating SIP and RTP metadata provides visibility across the call lifecycle and separates signaling faults from media impairments for more precise Root Cause Analysis (RCA). The agentless approach aims to enable continuous voice-quality monitoring and verification of network elements without capturing media content.

Product update

The brief presents ASN-DPI as a capability that streams SIP and RTP metadata in real time to monitoring and troubleshooting tools, preserving payload privacy. Aviz Service Nodes are identified as the platform through which the metadata export is delivered.

Overall, ASN-DPI exposes SIP and RTP metadata to link signaling and media for faster diagnostics and continuous voice-quality metrics; this “Blog Signals brief” is a fact-based summary of the vendor blog.